kobert



F. P. KOBERT.

ELECTRIC HEATING APPARATUS. Avrucmdn m2o :una s. 1920.

gnou/trot Hank P/fobert,

33513 qMS @JI-touwen n, i f

F. P. KOBERT.

ELECTRIC HEATING APPARATUS, Arrucnwufilgo mue 5. 1920.

5 patented 17,1921.-

. v y 1 '.1 3/ is 40 j; 471

To all fui/wot may concern; i... Be it known that 1,?FRANK Pi.

citizen of the United Stateseznd residin` at' .11

. elkff'my improved: invented `cer' fithe electrical'apparatu's*coperating there- Amit ille', L. I., in'the county- A =of and tate of New :Yorkg 'h "ve :qui

-Iig'nated by` suitable reference characters in tain new anduseful Improvements 'in' {ElecI with fandtheme'sns for-'controlling the cirtric Heating' Apparatus, lowing tof which theqfollljfcit tos'aidapparat'us; is a. spec1fication,fsuch aswirillenablem" Fig.- 2faparti'lsection on theli'ne '2 2' This i invention apparatus andV rreli'iteas tofielectic Fheatih 15.1;l f articularly't apparatus-0f "of Figi-1;andi'showingonother detail of the 'a idetail lofthe construction;

this class designedforuse-mfcorneetionfith'5rconstruction; :3 i i metalworkingmachin'es,suchs forgin'qa'wfooFigJlt-a! partialf'sectionfon the line 4-4 chinos,E electric 'riveting liacliflesgl've;

machines 'and other apparatus oft-hisplajssg-' iFio. 5 a partial section-lon the-line 5 5 and the object 'of the' mventin is Eto-j'provide'f"fof Fig.' 1'; and'ontanenlarged scale; and,

the de sir'edifprmin order tofai ittethe operationtof forming' fsuch article and ti'l produce simpre perfctlyfrmed prdii'tfikji urtherfobject ofthe invention beingi'toppr vide means whereby the heatin'gilei'nent flfFig. 'fa'ipartial sectionon the line 6-6 In' practice; If'provide a' suitable Vmain frame--l haring; bearings 11 and 12 in they 'lower ond-:portion thereof, and in which is l*'sllidably"mounted'afshaft 134 adapte-d to -be ma)Y be given a reciprocating moveffentgl und whereby" in one "movement offsai'd' eleg mentr'the electrodes thereof `will y=firmly "I grasp the 'metal or ii'ir'o'rkpiecfe to be heatedA and advance the same int a mai'hine 'or into' position -to be 'operated' upona'lirther oh-V ject being toprovide means for holding the metal or workpiece against 'niovem'e'ntm the1 other opera tion ot said heatiri'gelenient; and

a still fnrther object beingr to provide means tor controlling the circuit to the' 'electrodes ol" the heating elemcntlvyherehv the circuit is closed and `opened prior to the makingA operated or given4 ajtforward and backward -`recif-:rocatingf movementl by Aanysuiteblo inechamsrnlconnected fwith the end portion ''The upper end portion ofthe main frame :1,0 is providedfWit-h other bearings 15 `and "16 in which a'shat 17 is rotatably mounted. Ilalso'provide two'snpplemental frames 18 and 19whichaie adapted to be :id iustabl;Y '-'connected with the shaft 13 and are movable with said shaft.. Theodjnstment of the supplementalre'mes 18 and 19 on the and breaking of the Contact of said elc'c:

trodcs with the metal or workpiece in order to prevent what 'are knownas arcs'or elec-4 tric flashes between the electrodes and'the' metal or workpiece; and with theseand other objects in view the invention consists in :m electric heating apparatus of ther-.lass and for the purpose specified which is simple in construction and opcrotion"and'elii cient in use. und which. is constructed and operated as hereinafter described and claimed.

The invention is following specificatiomof which the accompanying drawings form a port, in which the separate parts of my improvement are dcs' 'fully disclosed in thee tnres '2.5 in each of which is mounted a slide 26, and'movahly connected with the slides 26 of the su plemental' frames 18 and 19 are electrodes 2 and 28 respectively, and other electrodes 29 and 30 :1re movably connected 1with enlarged portions 31 'on the supple- ''mental frames 18 and 19 below the slides 26.

yThe above described constructionoprpduces trodes 27.and 29 .respectivelythroughilextwo pair of electrodes, one pair eonstituting'g?E47 ible conducting-members 52 and `53', wherethe electrodes 27 and 29 and the other pair by the current from the transformer passes the electrodes 28 and 30. The movable conthrough leads 50-51 to the separate pairs of nection of the electrodes`-27"-to30"inclusive electrod'es-` with the slides 26 and the enlargedportions Y The electrodes27 t0 30 inclusive are pro- 31 is to permit of a slight swivel c'ztir'i'oi' 'vided `With"`brs"i passages 54 which exsaid electrodes in their supports toinsure tend transversely therethrough and water perfect contact of said electrodes, or"thh'pipesareconnected with the sideso'f said abutting arc-shaped faces 3.2 pthereof-on-a feleetrodes to'fpermitgfof! the circulation of workpiece 33 which, in the form of conwater through said electrodes for the purconstruction shown, consists #of "a rod ord pose of cooling the same.- heavy wire. I alsmprovide meansforfcontrolling' th The electrodes27and 28fare aldapteduto circuitto'thetransformer andthus -to-the be movedvertically :in -thesupplemental -jelectrdes'v'whereby'the current is turned on, frames 1S and 19 respectively;andfftoward Vafter-theIelectrodes'fhalvgeimade'contact withI and from the workpiece-.33 and, 4intheicon-i the workpiecelandvis'vshut oit prior tothe struction shown, said electrodesare 'operf` breaking'iof theieontactkof said electrodes ated through levers 34 rotatably mounted on"-" withsaid work iece. y In accomplishing this f projecting studs 35 -on the 'supplemental-V resultl provi e=a'. sha-ftr which is driven frames 18 and 19, oneendof said levers foe-fby any suitable meansaandfproperly timed ing lprovided with anti-friction rollers 36 With-thef-r ota,tion 'of theshat 17 as Well as which are adapted tov operateUin-the canl the reciproeati-n movement' of the shaft 13;-

grooves 24 of the cams 23 and piYot-ally=:vand secured-bolt Aevslitlilifaretvvo.annular-` connected with the. other en'ds of said-levers"f'contactvdisks-? andflwithfwhichthe mainA are links 3T whiclrarealso-pivotally coul* circuit'iwireSm59--and60 are connectedy nected with the electrodes 2 ayud-28g f Mounted atene. side ofthe-supplemental@ contact-disks -62 and'63'arefsecured to the` frame 19 and betweenythe separate. parts 'effi shaft-56 injruxtapesition to the disksf and the bearing 1G and secured to the shaft 171" 58, and the contact-segments64 of the disks l is a cam SSS-having `a camgr0o`ve39arrd a `62 and 63 arevplaced--incircuit with-the conf t lever 40 =is rotatably mounted onfasupport..-1 ftact faees165'ofttl'iadisksiand through i r 41 which, in the construction'-shown,` is --exible conducting. members 66.-- -:Brushes-6T. formed integrally withthe'main frameflOasf are adapted-tooperate-in connection with shown in Fig. 5. One 4enclLof the lever 405s Othe disksf62 and' 63fandare-provided with provided with an anti-friction roller 42 -'.wires-.68-whichw 4'connect -xvithfthetrans-f which is adapted-tol operate-inthe:cam'-iformerfltlr, groove 39 of the cam 38. A linkLdevioe-43- lVith theabevefdescribedconstruction it is pvotall)7 connectedwiththe other-endof- -"Will -be-seen that ay circuit rom-anysuitable said lever` and said link deviceoarries -a' javar source -will enter .the transformer through. member 44, which is pivoted thereto' as the brushes 61 andcontact disks 5i' and 58. shown at 45. andisaid jaw memberf is pro and throu h the contact disks 62 and G3. the vided on its bottom face with an aro-shaped Lbrushes 6 fand' wires 68 when the contact recess 46 which corresponds withha similar segmentsft ofthe-disks 62 and63 are e11- recess 47 formed in an extension 4S of `thew'gaged by the brushes 67: In the position bearing l2. The extension 48 of the bearshown in Fig. 2 of the `drawing the brush ing 12 constitutes a stationary jaw member= 67 is shown un its inoperative position and and the jaw member 44 is a inorablejawV the circuit to the transformer 49 is broken. member which is moved toward and, from It will be understoodthat the supplementhe stationary jan' member through the oper-q tal frames-18 and 19 may be adjusted longiaation of `the leven-40' and link 43,4 and is tudinally-o the shaft 13 to govern-the length adapted to raspl the workpiece 33 at inter'- of the rvivorkpiece 33' to be heated, or that vals to holdz the same against-movement` in-- portion of the-workpiece which it is desired one movement of the v supplemental -frames---to heat; and in theoperation of the machine 18 and 19 and the electrodes carried thereby.'A and With-the 'workpiece in position between as hereinafter described. the electrodesF and the jaw members 44 and' In' Fig. '1 of the ydrawing Ihave indicated 48, therotation of the shafts 17 and y56 will at 49 an lelectric transformer having-the rotate the cams y23 and 38 as Well as the conusual Vleads 50- and 51; The lead 50 is fcontact disks -57 and'58, 62 and 63,A and the jaw nectedwith the f enlarged portion -315vwith member/Hfwill be'novedf-outfof engagement which the electrode 29 is connectedywvhile with the workpiece 33 and the electrodes' 27 the leadV 51 is connected with the enlarged-and 28 moved downwardly toA grasp the portion 31 with which -the'electrode 30 is workpieceBB;afterfwhich-the circuit from connected. The electrodes v29 and30-'are the transformer'r to said-electrodes-will be placed in electrical connection with the ele(-- completed-through the Contact disks 62 and- 63 and the shaft l-will then be moved inthe direction of thelarrow a: Fig. 1 .byany suitable means, in which operation the supplemental frames 18 aud-19 wi-th the various parts connectedtherewith will be advanced 1n said direction on the shaft 17 and the workpiece 33 will be fed into the machine in thisvoperation and heated, While itis fed into the machine by reason ofthe firm contact of the electrodes therewith. After the supplemental frames 18 and 19 have reached the limit of their movement in the direction of the arrows w, the circuit through 4the transformer to -the electrodes is broken through thefcontact'disks 62 and 63, after which the electrodes 27 and 28,V are moved upwardly-and thejaw member 44 is moved into positionrtograsp the workpiece 33 to hold the same in positiolnand the shaft 13 is then moved backwardly into its normal position in which operation the supplemental frames 18 and 19 and -the various parts con nected therewith are moved'backwardly over the shaft lf'and the workpiece 33, and when the supplemental frames have reached the limit, of their backward movement the electrodes 27 and 28 are again moved into operative position and the jaw member 44 moved into inoperative position, and the above operation again repeated.

From .the foregoing it will be apparent that my improved heating apparatus may heat a workpiece of ,predetermined dimensions and feed the saliie into a suitable upsetting or riveting machine, while the same is being heated I may intermittently feed a workpiece of indefinite length into a machine and intermittently heat the same in such operation, and while I have shown certain details of construction for carrying my invention into effect, it will be apparent that I am not necessarily limited to these details nor to the feedingr and heating of a workpiece of any specific form or dimensions. and various changes in and modifications of the details of construction herein shown and de-A scribed may be made. within the scope of the appended claims wit-houtdeparting from the spirit of my invention or sacrificing its advantages.

iVith my improved heating apparatus I ma)y heat workpieces of predetermined dimansions prior to the fashioning of said workpieces, or I may heat a strip or sheet of material indefinitely throughout its entire length in the operation of passing it into the machine and through electrodes. and it will also be apparent that I may also heat predetermined portions of a workpiece of given dimensions. such for example. one end portion of a rod or bar which end portion is to he headed or fashioned in any desired manner, or a workpiece of indefinite length such as a rod or wire may be heated at predetermined points throughout its length, and the `machine in the operation of heating the lonwhat I claim as new and-desire to secure by Letters Patent, isg-A .y 4

1. A heating apparatus-comprising two vmovable e1ectrodes,.;said electrodes being-1 spaced longitudinally of ,and adapted to engage a `workpiece to feed it into a2 suitable machine, and means whereby said workpiece will be heated n the operation of feeding the same into a machine by said electrodes.`

2. A heating apparatus comprising two 4spaced electrodes, said electrodes being adapted to engage a workpiece to feed it into a suitable machine, vmeans,whereby said."

workpiece will be "heated inr the Aoperation of feeding the same in-to a. machine, and mea-ns forcontrolling the circuit to said electrodes to close. the ci'rcuit after theelectrodes are brought -into firm contact with said f workpiece and to open the. circuit prior =to the breaking of the contactfofsaidelec-4 trodes with saidworkpiece.l A

3.l A heating apparatus of the class described comprising two electrodes, means for adjusting saidv electrodes' toward and from each other 0n lasuitable support, said 'electrodes being adapted to receive a workpiece, means 'for firmly grasping 'said workpiecev in said electrodes, and means for giving said electrodes a reciprocating movement to feed the workpiece supported therein into a suitable machine. r-

4. A hea-ting apparatus of the class described adapted to heat predetermined portions of a workpieceof indefinite length and to feed said workpiece into a suitable machine in the operation of heating the sam'e, comprising.,lr two electrodes spaced longitudinallj7 of said workpiece, means whereby said electrodes may be operated to firmly graspV said workpiece in the operation of feeding;r

said ri-'orkpieceA into the machine, and means for controllingr the circuit to said electrodes whereby the circuit is completed after the electrodes are in firm contact with the workpiece.

5. A heating apparatus of the class described adapted to heat predetermined p0rtions of a workpiece of indefinite length and to feed said workpiece into a suitable same, comprising two electrodes space gitudinally of said workpiece, means whereb v said electrodes may he opera ted to firmly grasp said. workpiece in the operation of feeding said workpiece into the machine. and means for controlling the circuit to said electrodes whereby the circuit is completed after the electrodes are in firm contact with the workpiece and whereb;r the circuit to said electrodes is broken prior to the disengagement:Of'sdlctrodes"from h'-classdescribedbmprisiii asuitableiraln im? Seid-.workpieeegL-n; 1f:ashaftlnmlntedinrsaid rame ndadapted If 6. 'AJ heatingliapparatus sof-ethe- .elasswde-iil 4:0 be given la forward -and backward frecipscribedadaptednto .heatipredetermined Iperffroeatingumovement therein supplementatAv -1 j. tiensmfffa fworkpieeemcffindenite len thf'i frames'adjustably:connectedwithsaidiahaft;'fr0 and :feed Hsaidrworkpiecefintoa-suita les .ua pairfof electrodesmounted inficonnection'fmachine in the operation-offiheath thenwithieachfbflfsaid.suppleueuiatraiiesf-one' same,'comprisingitwo-electrodes 'space Il on-.i of theielectrodesiin each rpairibeing movable 'ff 1 gitudiliallyeof-:saidavdrkpieee:leaeheof 'Seid @toward andfrointhefother't lrll'yrgra'sp-- e electrodes benglmposedofiseparateipartsw-a workpiece'L mountedwbetveemasaid elec- "151- 'i one of which ismovabletowardandr-romf;:trodes `and-'the separate.; 'arsfthereo, meansf'f;. the otherg-means'aforoperatngthe movableffor operating the ni eelectrdesffin each parts-off` the1electrodes r.to: .rmly graspfa:.xpairgrandfmeans fort-closing thez/circuitto workpiecex :between athen separate :parte inf r. s'aidfi electrodes .'zaftere r`the wsepamate rpairsf! e mounting said'eleetrodes on av reciprocatingmqvith -thenworkpecemx ,s fr; .1w-g i, support-iff: gin-v i :f 11. An"electricfheatingfappaatusnoffithe- 7 5A Aheatin vapparatus of: the' classfdel. -class =describedgoomprisngqm suitableframepz" i scribed adapte to heat;predetermined-powa:a shaft'moutediin saidfrf'ra'mei andiadapted' tions-mf a workpiecefof indefinite length` to be glvenra-:forward-randbackwadirecip-r 85.4 and .to I-feed said! workpiece; fil'ltoE a' suitable' 5;'. rocating y xmovementi thereingr supplemental i z a .i i machinerin the :operation{cfs-heating 1thegpframesvadjustably 'connectednwith said shaft;` samefcomprisingtwo eleetiodesfs'paced'lona. pair-'fofT electrodes mounted' rin'ummection x= gitudinally tof saidworlqaie'ce,4 eachfo said itwith' each "offsaidfsupplemental Ffran'iesfone. 1 :in eleetrodembengcomposed ofyse'parate parts .cof theelectrodes in eehepair beinglmofable 962 one' of which 1s movable'rstow/arilfsand-from::a-toward'andiromrthefothervtdurmlydgrasp the othelameans for operatingthe mev'ablea workpieeemounted;betweemsaitllelectrodes: parts \of;.the electrodesei tofrmlyfgrasp f.f1-"land wthemseparateerpairs? 'ftheeofyw means "f wor iecebetweeuthevse arate parts of@'Wherebyfimieneimovementriof saidwreciprm 5 saide ectr'odes, means for' a justably mount-fi,'catinglr shaft the movableelectrodesin eaehb ing saidf electrodes ien/areciprocating sup-aipairjrvqill ben heldfln firuefcontactl with ,.the' port, andi-a l'swivel -support forwsaid: elec-'flworkplecewtosr'feedfthepsam into ya; suitable trodes.;..;` 1 machmeeiand means-'forfclosingfthd-eircuit scribed adapted rto beatipredetermined por. sald workpiece to "heat the (Same inthe bper 10e f tions of a workpiece of indefiniteflength: ation of feedingthewworkpiece intofiao-ma-l and .to feedsaid workpiece'intoafsuitgable Y Clllrles e' i. f :isf: r "L machine in th Opla-tionrfof heatinglrr the/i1l 12. Anfelectriciheatingfapparatus of the same, comprising twe-eleetrodesr spaced 10uclass described comprising` Va 'suitable frame,

. gitudnally `of Vsaid workpiece, eachof said a shaft mounted; in said lframe-andadapted..105 r electrodes being composedfofseparate' parts -1t0 be'lgfivenY a -forward -and' backward recipi one of whichis movableftoward'and -frc'm If'lOCzltlngfmoi/'etnenti therein-,@supplemental-'H thg other.,A means fols Operating the lovable i fl'lneSudjUSt'llJlfV'COlllleCted'With Said Shaft, parts ,ofY the. electrodes to firmly grasp a .pair ofY electrodes 'mountedfn'colmection workpiece -between rthe Se )grate parte el:` with each of said 'supplemental Iframes, ones-110 said electrodes, means for-a justably 'mount-i 0f the'electrodes in each-pair being movable A ing said electrodes on-a reciprocating SuplOWaIGl and fromitheothertofirmlyfgrasp port` a, swivell Support for Said velectr0des-- it Workplece mounted betWl1SLldielCtr0deS and means for cooling the separateparts off 1nd Vthef''separatempaire'f;thereof;= means seid elect-,redete whereby in one movement of said recipro- 115 9, An ,electrjcheating .apparatus 0f the C Catll'g Shtlfbthe movsbl eIQCtI'OdeS n'eacll i class described comprising a suitable ranueu` Pall Will bflleld-H fl'm olltact'I with' the a shaft mounted -in saidy frame and adapted WOFkpieCet0 lfdth Same into' a Suitable to be given a forward. and baekwardrecip- -machinepmeansfor `closing the circuit 'toi rocating movement thereim. supplemental" Sald electrodesWhemiwrm contact with 120 frames adjustably connected with-saidshaft, said workpiece to heat the Asame in the Vopera pair of electrodes mounted in connection atiOHof feedingtheworkpeoe into a mawith each of said supplemental frames, one Chine, 'and whereby in the other movement of the electrodes in each pair being movable of said shaft the separate pairs of electrodes toward andr-0m theother to frmlygrasp Will be moved out -of engagementwithsaid 125 a workpiece mountedbetween `said elecworkpiece, and means for' breakingri the cirtrodes and theseparate` pairs thereof, and" cuit of `said electrodes prior to the disen means for operating the movablefelectrodes gagementof said electrodes' from said Workin each pair. --p1ece. f

10. An felectricheating" apparatus of them- 13. IAn electric heating apparatus4 ofthe y1'30 `l class described comprising a suitable frame, a shaft mounted in said frame and adapted to be given a forward and backward reciprocating movement therein, supplemental frames adj ustably connected with said shaft, a pair of electrodes mounted in connection with each of said supplemental frames, one of the electrodes in each pair being movable toward and from the other to firmly grasp a workpiece mounted between said electrodes and the separate pairs thereof7 means whereby in one movement of said reciprocating shaft the movable electrodes in each pair will be held in rm Contact with the workpiece to feed the same into a suitable machine= means for closing the circuit to said electrodes when in firm contact with said workpiece to heat the same in the operation of feeding the workpiece into a machine, and whereby in the other movement of said shaft the separate pairs of electrodes Awill be moved out of engagement with said workpiece, means for breaking the circuit to said electrodes prior to the disengagement of said electrodes from said workpiece, and means for holding the workpiece against movement in the last named operation of said reciprocating shaft and said electrodes.

14. An electric heating apparatus of the class described comprising a suitable frame, a shaft mounted in said frame and adapted to be given a forward and backward reciprocating movement therein, supplemental frames adj ustably connected with said shaft, a pair of electrodes mounted in connection with each of said supplemental frames, one of the electrodes in each pair being movable toward and from the other to firmly grasp a workpiece mounted between said electrodes and the separate pairs thereof, means whereby in one movement of said reciprocating shaft the movable eiectrodes in each pair will be held in firm contact with the workpiece to feed the same into a suitable machine, means for closing the circuit to said electrodes when in firm contact with said workpiece to heat the same in the operation of feeding theworkpiece into a machine, and whereby in the other movement of said shaft the separate pairs of electrodes will be moved out of'engagement with said workpiece, means for breaking` the circuit to said electrodes prior to the disengagement of said electrodes from said workpiece, means for holding the workpiece against movement in the last named operation of said reciprocating shaft and said electrodes, and means for water cooling said electrodes.

15. A heating apparatus-comprising two pairs of movable electrodes, the separate pair of electrodes being spaced longitudinally of and adapted to engage a workpiece to feed it into a suitable machine, and means whereby that portion of the workpiece between the separate pairs of electrodes will be heated in the operation of feeding the same into a machine by said electrodes.

1G. A heatin apparatus of the class described adapte to heat predetermined portions of a workpiece of indefinite length and to feed said workpiece into a suitable machine in the operation of heating the same, comprising movable electrodes spaced longitudinally of said workpiece.

In testimony that I claim the foregoing as my invention I have signed my name this 3rd day of June, 1920.

FRANK P. KOBERT. 

